Function: Appends ‘(Draft)’ to draft page titles in the privacy page dropdown so that unpublished content is obvious.

Function: Sends a referrer policy header so referrers are not sent externally from administration screens.

Function: Saves the XML document into a file.

Function: Displays the default admin color scheme picker (Used in user-edit.php).

Function: Checks lock status for posts displayed on the Posts screen.

Function: Checks lock status on the New/Edit Post screen and refresh the lock.

Function: Checks nonce expiration on the New/Edit Post screen and refresh if needed.

Function: Disable suspension of Heartbeat on the Add/Edit Post screens.